64366864 has 10 divisors (see below), whose sum is σ = 124710830. Its totient is φ = 32183424.

The previous prime is 64366859. The next prime is 64366867. The reversal of 64366864 is 46866346.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 16646400 = 6908^2 + 4080^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64366864.

It is not an unprimeable number, because it can be changed into a prime (64366867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011449 + ... + 2011480.

It is an arithmetic number, because the mean of its divisors is an integer number (12471083).

Almost surely, 2^64366864 is an apocalyptic number.

It is an amenable number.

64366864 is a deficient number, since it is larger than the sum of its proper divisors (60343966).

64366864 is a wasteful number, since it uses less digits than its factorization.

64366864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022937 (or 4022931 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The square root of 64366864 is about 8022.8962351510. The cubic root of 64366864 is about 400.7628442468.

The spelling of 64366864 in words is "sixty-four million, three hundred sixty-six thousand, eight hundred sixty-four".